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Powering of an implantable medical therapy delivery device using far field radiative powering at multiple frequencies

  • US 9,402,994 B2
  • Filed: 03/29/2012
  • Issued: 08/02/2016
  • Est. Priority Date: 07/14/2011
  • Status: Active Grant
First Claim
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1. An implantable medical device comprising:

  • at least one antenna, the at least one antenna configured to receive a first far field radiative signal in a first frequency band and to receive a second far field radiative signal in a second frequency band;

    a voltage rectifier configured to rectify the received first far field radiative signal and the received second far field radiative signal to provide a rectified voltage signal;

    a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal;

    a therapy delivery unit powered by the charge storage element, the therapy delivery unit operative to deliver a therapy to a patient; and

    a threshold detector coupled to the charge storage element, wherein the threshold detector is configured to;

    detect whether a charge stored at the charge storage element satisfies a threshold; and

    in response to detecting that the charge stored at the charge storage element satisfies the threshold, send a signal to the therapy delivery unit to cause the therapy delivery unit to generate an electrical stimulation signal to deliver the therapy to the patient.

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